The proximity of God's reign does not change the fact that we are required to pray for its coming. But that is not because God is holding something back. That the reign of God is both 'already' and 'not yet' is not because it is only partially present or provisionally given, but rather because while it is given concretely and in the present, it may always be rejected and refused.
-- p 82, Bryan Stone, Evangelism after Christendom